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Hunter-Best [27]
3 years ago
7

. (1 pt) Which should be calculated first to solve this story problem? A bus driver drove a bus 43.9 miles per hour for 5 hours

on Monday. He drove 47.5 miles per hour for 3 hours on Tuesday. How far did the bus driver drive altogether?
Mathematics
1 answer:
ehidna [41]3 years ago
4 0
Monday: 43.9 miles per hour. 5 hours.
Tuesday: 47.5 miles per hour. 3 hours.

We need to multiply each unit rate by the number of hours traveled per day.

Monday: 43.9 mph * 5 hours = 219.50 miles
Tuesday: 47.5mph * 3 hours = 142.50 miles

Total number of miles: 219.50 miles + 142.50 miles = 362 miles.
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Clarisse used the ordered pairs (0, 13) and (24, 5) for her trend line. What would be the y-intercept of her trend line?
laila [671]

Answer:

Step-by-step explanation:

Remark

You have 2 points to solve the equation y = mx + b. After finding m, use either of the points to find b.

Formula

y = mx + b

m = (y2 - y1)/(x2 - x1)

Solution

  • y2 = 13
  • y1 = 5
  • x2 = 0
  • x1 = 24

m = (13 - 5)/(0 - 24)

m = 8 / - 24

m = - 1/3

y = mx + b

y = -1/3 x + b

Use (0,13)  as the point.

13 = -1/3 * 0 + b

13 = b

The y intercept = (0,13)

5 0
3 years ago
Determine whether the data set is a population or a sample. Explain your reasoning. The salary of each teacher in a school. Choo
SVETLANKA909090 [29]

Answer:

D. ​Population, because it is a collection of salaries for all teachers in the school.

Step-by-step explanation:

In research, population refers to a complete set of subjects that share a characteristic and that the researcher is interested in. On the other hand, a sample is a subset of a population and it's usually the one the researcher takes to make a study with.

In this example, we have "The salary of each teacher in a school" since we are taking ALL the teachers of this school, this would be a population. If we were working with the salary of only a portion of the teachers of said school, it would be a sample.

Thus, the right answer is  D. ​Population, because it is a collection of salaries for all teachers in the school.

5 0
3 years ago
K is the midpoint of JL. JK = 2x + 5 and JL = 50.
Sergeu [11.5K]
Steve set the equation equal to 50 which is the entire length of JL. instead he should've set the equation equal to 25, since it's half of 50 and would represent the midpoint. he should've said 2x + 5 = 25
8 0
3 years ago
Felicia used 153 Yellow beads and some green beads for her art project. She used 9 times as many Yellow beads as green beads. Ho
Vlada [557]

Answer:

17

Step-by-step explanation:

To find the number of green beads that Felicia used, we first need to list out what we know.

Let x = number of green beads.

Yellow Beads = 153

So we get:

x*9 = 153

We divide both sides by nine to find the value of x.

\dfrac{x*9}{9}=\dfrac{153}{9}

x = 17

To see if we got the answer correct, let's substitute x.

x * 9 = 153

17 * 9 = 153

153 = 153

7 0
3 years ago
The following is an example of a directional/ one-tailed hypothesis (Chapter 8 review):
elixir [45]
I think it’s true because happy body happy mine
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